Doorlock



April 21, 192s. 1,534,584

J. P. FREDRICK DooRLocK Filed April 28, 1924 2 sheets-sheet' 1 gij/5April 21, 1925.

J. P. FREDRICK DOORLOCK Filed April 28. 1924 2 Sheets-Sheet 2 PatentedApr. 21, 1925.

UNITED STATES PATENT OFFICE.

JOSEPH P. FRIDRICK, OF CHICAGO, ILLINOIS, ASSIGNOR F ONE-HALF T0 AUGUSTJ. LURIE,.OF CHICAGO, ILLINOIS.

DOORLOCK.

Application lllletl April 28, 1924. Serhl No. 709,346.

To all whom t may concern.' Y

Be it known that I, JOSEPH P. FREDmcK, a citizen of the United States,and resident of Chicago, in the county of Cook and State of Illinois,have invented a certain new andl useful Improvement in Doorlocks, ofwhich lthe following is a full, clear, concise, and vexact description,reference being had to the accompanying drawings, forming a part of thisspecification.

My invention relates to locks, and more especially to locks for doubledoors such as are customarily used in garages wherein the doors arelocked at the top and at the bottom of their juxtaposed vertical ed es.Y

' One object of my invention is t e provision of an easily and quicklyopened fastening means for the door, such vthat a. single key may beinserted in a` conveniently located lock, the turning of the keyreleasing the door latches at the top and at the bottom of the door.Another object of my inventionis the provision of a supplemental handle,the operation of which is controlled by such a lock, whereby a greaterforce may be applied to release the latches should the turning of thekey not easily release them.

These and further objects and features of my invention are set forth inthe following so description of a specific embodiment thereof. In theattached drawings, which illustrate such an embodiment,

Figure 1 is an elevation of the interior side of a double door of agarage provided Y with the lock of my invention;

Figure 2 is a transverse vertical section taken on the line 2-2 ofFigure 1; l

Figure'3 is a longitudinal detail section of the lock mechanism taken onthe line 3 3 0f Figure 1;

Figure 4 is a vertical section taken on the line 4-4 of Figure 3,showing a rear elevation of the lock mechanism;

Figure 5 is a transverse section of the lock mechanism taken on the line5-5 of Figure 3;

Figure 6 is a front elevation of the lock mechanism; and

Figure 7 is a detail section taken on the line 7--7 of Figure 4, showinga clamping member.

The double door here shown comprises doors 11 and 12, hinged at theiropposed vertical edges to the door frame, the free ed e of the door 12preferably bein provi ed with a strip 13 for overlying t e adjacent edgeof the door 11, so that the door 12, when locked, will prevent openingof the door 11. At the top of the door 12 and adjacent to its free edge,is secured a bracket 14 upon which is pivoted a latch 15. The latch 15is adapted to engage a stationary latch member 16, secured to the underside of the upper rail 17 of the door frame. An operating rod 18,pivoted to the latch 15, extends downwardly to a lock mechanism 19conveniently mounted on the door intermediate its top and bottom edges.At the bottom of the door is a somewhat similar latch mechanismcomprising the bracket 20, the latch 21 and the stationary latch member22. An operating rod 23 extends upwardly from the latch 21 to the lockmechanism 19.

It is to be noted that the upper latch 15 forms a lever of the firstclass, vwhile the lower latch 21 forms a lever of the third class. Thus,although the upper latch must be moved downwardly to release itself,while the lower latch must be moved upwardly to release itself, both theoperating rods 18 and 23 must be lifted upwardly to release thelatches.-

The lock mechanism 19 is supported in a frame 24, which comprises a backplate secured by wood screws 26 to the interior side of the door l2. Thewood of the door is cut away to provide room for a boss 27 projet-tinginwardly from the back plate of the frame 24. A cylinder lock 28 isscrew threaded into the end of the boss 27, the lock 28 extending to theexterior side of the door. The rotatable cylinder member 29 of the lockis provided with the customary tumblers 30 and is adapted to receive thekey 31. The rotatable member 29 is extended through the back plate ofthe frame 24 and at its end an eccentric cam 32 is pinned. If

it is desired to employ a standard cylinder i lock, the rotatable member29 may, of course,

be formed in two parts connected to rotate together. v

The lower endl of the upper latch actuating rod 18 extends through ahole in an upper shelf 33 on the frame 24 where it is slidably journaledand carries -at its lower end a yoke 34 on which is mounted a roller`35. The weight of the actuating rod 18, the

yoke and the roller forces the latter into engagement with the cam 32,so that when the key 31 is inserted in the lock and the rotary memberturned, the cam 32 will raise the roller 35 and release the upper latch.The lower latch actuating rod 23 extends through a shelf 36 at the lower`end of the frame and also through the upper shelf 33. Above the frame24 the rods 18 and 23 are secured together by a clamp 37 comprising ametal strip bent around the rods at its ends, and fixed to the rods byset screws 38.` Turning of the key 31 will raise the lower rod 23,together with upper rod 18, to release both latches simultaneously. Iprefer to provide thecam 32 with a peripheral bead 32', which coo erateswith a mating groove 35 in the ro ler 35 to prevent sldewarddisplacement of the latter.

The device, thus far described, hasY no eX- posed parts other than thefront end of the cylinder lock, and the door may be unlocked by merelyinserting the key 31 in the lock and turning it a half revolution. Thedoor may easily be unlocked with the use of one hand and with greatconvenience, and at the same time there is presented nothing but theforward end of the lock by means of which a thief may attempt to forceor break the device. l/Vhile an efficient and yet inexpensive garavedoor lock is atl'orded by the device as tlius far described, Icontemplate that it may be desirable, in some instances, to providesupplemental means for forcibly releasing the latches, wherethe severalparts have become rusted or bent, or for other reasons work too hard tobe actuated easily by the key alone. A supplemental mechanism of thisnature is shown in the drawings as applied to the device previouslydescribed. Directly below the the boss 27, the frame 24 is provided witha second boss 40, within which is slidably mounted the shank of aT-shaped handle 42. A slot 43 is cut in the front face of the door, intowhich slot the cross head of the handle is sunken. The shank isshouldered at 44 to provide a reduced cylindrical portion rearwardlythereof. The reduced portion is again shouldered at 45 and continuesrearwardly therefrom with a square cross section as indicated at 46. Thesquare portion 46 of the shank is slidably journaled in the square boreof the bushing 47, which is, in turn, rotatably journalet in a bracket48 extending upwardly' from the lower shelf 36 of the frame.

A second or lower eccentric cam 49 having a square opening is carried onthe s nare portion 46 of the shank and is disposelil between theshoulder 45 thereof and the forward end of the sleeve 47. A coil sprinv50 is disposed about the shank 4l and abuts the lower cam 49 and theshoulder 46 of .the frame for the swinging of the dog about its pivot52. As shown in Figure 5, when the key is inserted in the lock and therotatable member turned a few degrees, the edges 0f the slot 54 in therotatable member will move the upper end of the dog a .sufiicientdistance to swing its lower end out of thegroove 53. The compressionspring 50 then shoots the handle 42 outwardly until the. pin 55,l andthe rearward end 'of the shank contacts with bracket 48. The handle 42may then be easily grasped by the hand and rotated without hitting thekey 3l.

through a web of thel Referring to Figure 4, when the mechanism is -inits locked position, the high point of the cam 32 is lowermost, and thelow point of the second cam 49 is uppermost. After the handle 42 hasbeen released so that it ma be manually grasped, it is turned, preferaly in the direction opposite to that in which the key is turned. Becauseof thc frictional engagement between the peripheries of the two cams,together with the leverage they afford, rotating the lower cam 49 willcause the upper cam 32 to be rotated in the opposite direction, thusrendering unnecessary a manual rotation of the key 31. iVhen therotation of the handle 42 has swung the cams to their dotted lineposition, the rail 35 will have been carried to its upper position torelease the latches. Friction between the cams 49 and 32 may beincreased and their relative longitudinal movement prevented by theprovision cf a groove 49 on the latter, cooperating with the bead 32 ofthe upper cam.

It is not necessary that the handle 42 be used except in instances wherethedevice tends to bind when actuated by the key 31 alone. Functioningof the handle 42" and cam 49 is purely supplemental to that of the key3l an( the cam 32, sincethe latter may be used entirely independently ofthe former. When this is done, the key 31 will swing the cam 32 awayfrom the lower cam 49, which remains in the position of Figure 4.

To again lock the door, handle 42 is turned to lower the second cam '49and the handle is pushed back into its slot 43. The key 3l .is thenturned backwa'rdly to lower the upper cam 32 and to allow the dog toreenter the groove 53fof the shank.

While I have shown this particular embodiment of my invention, Icontemplate that many changes may be made therein without departing fromthe spirit and scope of my invention.

What I claim'is:

'1. In a lock released, self-latching door, separate locking mechanismsfor the upper and lower edges of said door each comprising a latchsupported bythe door and a co-operating fastener secured to the doorframe, each of said fasteners having a locking shoulder, each of saidlocking mechanisms comprising a cam surface for automatically raisingthe associated latch member and droppin it behind said locking shoulderwhen 'sai door is slammed shut, a lock on said door comprising a rotarymember, an eccentric cam on said rotary member, a key for said lock, asingle vertically reciprocable roller riding on the upper periphery ofsaid cam, rods having operative connection with said roller andconnected to said upper and lower latches, both of said rods and theirassociated latches being lifted vertically to unlocked position by theraising of said single roller under the action of said cam, said rollerbein freely liftable from the periphery of sai cam to permit saidautomatic relatching of said locking mechanism when said door is slammedshut.

2. In a lock released, self-latching door, separate locking mechanismsfor the upper and lower edges of said door each comprising a latchsupported by the door and a cooperating fastener secured to the doorframe, each of sai-d fasteners having a locking shoulder, eachof saidlocking mechanisms comprising a cam surface for automatically raisin theassociated latch member and droppin it behind said locking shoulder whensaid door is pushed to closed position, a cylinder lock on said d oorcomprising a rotary member, aneccentric cam on said rotary member, a keyfor said lock insertable in said rotary member from the exterior of thedoor for rotating saidY cam, a single vertically reciprocable rollerriding on the upper periphery of sai-d cam, rods having operativeconnection with-said roller and connected to said upper and lowerlatches, both of said rods and said associated latches being liftedverticall to unlocked position by the raising of sai single roller underthe action of said cam, said latches ravitationally relatching under theweight o said rods and said roller, said roller being liftable fromtheperiphery of said cam to permit said automatic relatching when saiddoor is pushed to closed position.

3. The combination of a vertically disposed .door, a latch at one of thehorizontal edges thereof for co-operating with a stationary latchmember, a lock mechanism .comprising a rotatable member, an eccentriccam on saidrotatable member, a roller engagng said cam and reciprocatedthereby,

a peripheral bead and a co-acting peripheral groove on said cam androller, and means for connecting said roller and said latch.

4. The combination of a'dooi, fastening means on said door forco-operating with stationary fastening means, a lock mechanism mountedon said door and comprising a rotary member, a first cam on said member,means engaging said cam for releasing said fastening means, a handleprovided with a shank supported on said door, a second cam on saidshank, and means controlled by said lock mechanism for preventingeffective movement of the second cam by said handle when in lockedposition and permiti ting movement of the second cam actuating the firstcam to release said fastening means when in unlocked position.

5. The combination of a door, a fastening member therefor forcooperating with stationary fastening means, a handle havinga shanklongitudinally slidable in said door transversely thereof between aninner and an outer position, a cylinder lock carried by said door, a keyfor said lock insert-able from the same side of said door from whichsaid handle is operable, a rotary member actuated by the turning of saidcylinder lock, actuating means Aconnecting said rotary member with saidfastening member, said l cylinder lock being operable to release saidfastening'member through said rotary and said actuating membersindependently of rotation of said handle, and means operativelyconnecting said handle with said actuating member whereby said handlemay be used as a supplemental unlocking means where a greater unlockingeffort is necessary than is available through said key.

6. The combination of a vertically disposed door for a garage, and thelike, latches at the upper and lower edges of the door for co-operatingwith stationary latch members, a lock mechanism on said door, a camcontrolled Aby said lock mechanism, means engaging said cam and actuatedthereby, a rod connecting said engaging means with the upper latch, anda second rod for connecting said engaging means with the lower latch,the latch at the upper edge of the door moving downwardly to releaseitself from its associated member, and the latch member at the loweredge of the door moving upwardly to release itself from its associatedlatch member, said latches constituting levers of different classes,whereby a similar movement of the two rods will release both latches.

7. The combination of a door, fastening members mounted on the top andbottom edges of said door for cooperating with stationary fasteningmeans to lock the door closed, a cylinder lock on said door comprising arotary member, an eccentric cam on said rotary member, a key for saidlock insertable in said rotary member from the exterior of the door forrotating said cam, a single cam follower having movement in asubstantially rectilinear path riding on the upper periphery of saidcam, and means connecting said single follower with both of saidfastening members`r whereby rotation of said key will release saidfastening members through said single follower.

8. The combination of a door, fastening members mounted' on the top andbottom edges of said door for cooperating with stationary fasteningmeans to lock the door closed, a cylinder lock on said door com-`prising a rotary member, a back plate secured to the rear of said doorhaving an aperture therein, said rotary member extending through saidaperture, an eccentric cam on the projected end of said rotary member, akey for said lock insert-able in said rotary member from the exterior ofthe door for rotating said cam, a reciprocable roller engaged by saidcam, and connecting means for connecting said roller with said fasteningmembers, said back plate having guide openings for guiding the movementof said roller and said connecting means.

9. The combination of a door, fastening members, mounted on the top andbottom edges of said door for cooperating with stationary fasteningmeans to lock the door closed, a cylinder lock on said `door comprisinga rotary member, an eccentric cam on said rotary member, a key for saidlock insertable in said rotary member from the exterior of the doorforrotating said cam, a back plate secured to the rear of said door havingtop and bottom walls projecting from said plate above and below saideccentric cam, said top and bottom walls having guide openings therein,means mounted for reciprocation in said guide openings and havingoperative connection with said fastening members for releasing the same,and

a follower roller mounted on said last-named 46 means and engaged bysaid cam.

l0. The combination of a door, fastening members mounted on the top andbottom edges of said door for cooperating With stationary fasteningmeans to lock the door closed, a cylinder lock on said door comprising arotary member, an eccentric cam on said rotary member, a key for saidlock insertable in said rotary member from the exterior of the dooi forrotating said cam, a follower roller engaged by said cam, rodsconnecting with said fastening members and adapted to be actuated by themovement of said roller, and adjustable means connecting said rods withsaid roller whereby the effective lengths of said rods may be increasedor diminished.

11. In a lock released, self-latching door, the combination of lockingmechanisms for the upper and lower edges of the door, a lock on saiddoor comprising a rotary member, an eccentric cam on said rotar member,a single vertically reciprocable ro ler riding on the periphery of saidcam, and rods having operative connection with said roller and connectedto said upper and lower locking mechanisms, bothV of said rods beinglifted vertically to unlocked position by the raising of said singleroller under the action of sai-d cam, said roller being freely liftablefrom the periphery of said cam to permit automatic relatching of saidlocking mechanisms when said door is moved to closed position.

In Witness whereof, I hereunto subscribe my name this 14th day of April,1924.

JOSEPH P. FREDRICK.

Witnesses:

HELEN G. DREINIAK, HATTIE R. SoHooLEa.

